GRADES-IMAGE
GRADES-IMAGE: Aerogeophysical survey of the Evans and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf, West Antarctica
- Start date
- 29 December, 2006
- End date
- 1 January, 2007
The GRADES-IMAGE science programme was a British Antarctic Survey-funded project over the Antarctic Peninsula and Filchner-Ronne Ice Shelf.
The aim of the programme was to image englacial layering and bedrock topography over this sensitive catchment of the West Antarctic Ice Sheet and Antarctic Peninsula. In total, this field campaign collected ~27,550 line-km of aero-geophysical data (including magnetics and radar data) over the Ellsworth Mountains, Evans Ice Stream and Carson Inlet, and Rutftord Ice Stream over 100 hours of surveying.
Datasets
List of airborne geophysics datasets available for this project includes:
Aeromagnetic data:
- Ferraccioli, F., & Jordan, T. (2020). Airborne magnetic data covering the Evans, and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf (2006/07) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/7504BE9B-93BA-44AF-A17F-00C84554B819
Bed and surface elevation picks data:
- Corr, H. (2020). Airborne radar bed elevation along flow lines covering the Evans, and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf (2006/07) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/4EFA688E-7659-4CBF-A72F-FACAC5D63998
Radar data:
- Corr, H. (2021). Processed airborne radio-echo sounding data from the GRADES-IMAGE survey covering the Evans and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf, West Antarctica (2006/2007) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/C7EA5697-87E3-4529-A0DD-089A2ED638FB
Data Portal
Airborne Geophysics data can also be accessed through the new Airborne Geophysics Data Portal.
More information about the Portal can be found here: https://www.bas.ac.uk/project/nagdp/#about
Publications
Ashmore, D.W., Bingham, R.G., Hindmarsh, R.C., Corr, H.F. and Joughin, I.R., 2014. The relationship between sticky spots and radar reflectivity beneath an active West Antarctic ice stream. Annals of Glaciology, 55(67), pp.29-38. https://doi.org/10.3189/2014AoG67A052
Aerogravity system
BAS has developed aerogravity systems that can be mounted in its geophysical survey aircraft, or in a UAV. Over 100,000 km of gravity data has been collected since such systems …
Polarimetric Radar
The radar system is composed of a complex waveform generator, signal processor, data handler and data store. It includes a high power transmitter (up to 66dBm or 4kW), a low …